<TABLE BORDER=2>
    <%
        String volaco = (String) request.getAttribute("volaco");
        out.println(volaco);
        if (volaco == null) {
            out.println("FIUUUUU");
            int n = 0;
            try {
                n = Integer.parseInt(request.getParameter("n"));
            } catch (NumberFormatException ex) {
                ;
            }
            //Thread.sleep(5000);
            //request.setAttribute(name, o);
            for (int i = 0; i < n; i++) {
    %>
    <TR>
        <TD>Number</TD>
        <TD><%= i + 1%></TD>
    </TR>
    <%
        }

        String poslat = "88";
        request.setAttribute("volaco", poslat);
        //request.getRequestDispatcher("/testy/hello.jsp").include(request, response);
    } else {
        for (int i = 0; i < 20; i++) {
    %>
    <TR>
        <TD>Number</TD>
        <TD><%= i + 1%></TD>
    </TR>
    <%
            }
        }
    %>
</TABLE>